1. Elsie Bertram Diabetes Centre, Department of Diabetes and Endocrinology, Norfolk and Norwich University Hospital National Health Service Trust, Norwich, England
2. Norwich Medical School, University of East Anglia, Norwich, England
3. School of Sport, Exercise & Rehabilitation Sciences, University of Birmingham, Birmingham, England
4. University of Exeter Medical School, College of Medicine & Health, University of Exeter, Exeter, England
5. Department of Diabetes and Endocrinology, Ipswich General Hospital, Ipswich, England
6. Department Clinical Biochemistry, Norfolk and Norwich University Hospital NHS Trust, Norwich, England